物理化学学报 >> 2009, Vol. 25 >> Issue (06): 1047-1052.doi: 10.3866/PKU.WHXB20090607

研究论文 上一篇    下一篇

5A分子筛粉末对四氢呋喃水合物的生成及分解过程的影响

臧小亚, 梁德青, 樊栓狮, 唐翠萍   

  1. 中国科学院广州能源研究所, 中国科学院可再生能源与天然气水合物重点实验室, 广州 510640|中国科学院广州能源研究所, 天然气水合物研究中心, 广州 510640
  • 收稿日期:2009-01-09 修回日期:2009-03-02 发布日期:2009-06-05
  • 通讯作者: 梁德青 E-mail:liangdq@ms.giec.ac.cn

Influence of 5A-Type Zeolite Powder on Tetrahydrofuran Hydrate Formation and Dissociation Process

ZANG Xiao-Ya, LIANG De-Qing, LIANG De-Qing, FAN Shuan-Shi, TANG Cui-Ping   

  1. Key Laboratory of Renewable Energy and Gas Hydrate, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, P. R. China|Guangzhou Center for Gas Hydrate Research, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, P. R. China
  • Received:2009-01-09 Revised:2009-03-02 Published:2009-06-05
  • Contact: LIANG De-Qing E-mail:liangdq@ms.giec.ac.cn

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摘要：

在低于0 ℃和常压下, 将粉碎并筛分后的成型5A分子筛粉末加入四氢呋喃-水(二者质量比为19:81)体系中, 用显微镜观察5A分子筛粉末的存在对四氢呋喃水合物生成和分解过程的影响. 结果表明, 5A分子筛粉末能够促进四氢呋喃水合物的生成. 5A分子筛粉末存在下, 四氢呋喃水合物生成方式主要表现为两种, 脉状生成和块状生成; 同时5A分子筛粉末能够提高四氢呋喃水合物结晶所需要的温度, 降低四氢呋喃水合物的分解温度; 而且5A分子筛粉末粒径的大小及分布对四氢呋喃水合物生成及分解的特性也有很大影响.

关键词: 5A分子筛, 四氢呋喃水合物, 生成, 分解

Abstract:

Visual observations of tetrahydrofuran (THF) hydrate formation and dissociation processes with 5A-type zeolite powder were made at normal atmospheric conditions and below zero temperature by microscope. Results indicate that 5A-type zeolite powder can promote THF hydrate growth. At the same time, in the presence of 5A-type zeolite, agglomerated crystals and vein-like crystals of THF hydrate were also formed. 5A-type zeolite powder increases the crystallization temperature and decreases the dissociation temperature. The particle size distribution of 5A-type zeolite powder influences THF hydrate formation and its dissociation characteristics significantly.

Key words: 5A-type zeolite, Tetrahydrofuran hydrate, Formation, Dissociation